JPS63204055A - Inverter-driven type heat pump cooling and heating air conditioner - Google Patents

Abstract

PURPOSE:To enable an amount of blown air to be maintained when blowing air temperature is decreased under a specific capability control of an inverter by a method wherein a blowing temperature selection switch is arranged at an operating part and a blowing air temperature sensed by a sensor for sensing the temperature of blowing air which is arranged at a main body of equipment is controlled in such a way as it may become a value set by the blowing air temperature selection switch. CONSTITUTION:A blowing air temperature is selected to a value of, for example, 50 deg.C with a blowing air temperature selection switch 10 and then a heating operation is started. As the temperature of a heat exchanger 6 sensed by a thermistor 7 becomes more than 20 deg.C, a hot starting operation is released, a fan 5 is rotated to blow ultra-fine air, the temperature of blowing air is detected by a thermistor 8. When the blowing temperature does not reach to 45 deg.C, the number of revolution of a motor 4 is decreased by 100 rpm than a predetermined number of revolution in order to increase air temperature, an increase in decreased air speed is controlled to generate an air flow of spot condition A by concentrating vanes 2 and 3 by 10 deg. without increasing the amount of air. In this case, air speed is not restricted more than a reduced flow condition defined in relation to the positions of the vanes 2 and 3 and the number of revolution of the motor 4 in such a manner as it may not exceed a certain predetermined value.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a relatively small-sized air conditioner, particularly an inverter-driven ILJ type heat pump type air conditioner for heating and cooling, which improves the comfort of people in the air conditioned space. It is related to.

BACKGROUND OF THE INVENTION In recent years, there have been remarkable developments in technology for improving the comfort of relatively small air conditioners, and products using these technologies have been commercialized.

For example, in an inverter air conditioner that is equipped with an inverter and can set the rotation speed of the compressor arbitrarily, the compressor's operation/f? The room temperature in the air-conditioned space remains constant with almost no fluctuations, and by running the compressor at high speed at startup, the time it takes to reach the desired room temperature is significantly shortened. . In addition, the technology related to the temperature of the air blown out from an air conditioner into the air-conditioned space basically involves preventing cold air from blowing out at the start of heating operation. Technology that changes the IA speed to maintain a constant arrival ff1m when hot air reaches the residential area, or when the room temperature during heating becomes the set value and the air conditioner performs capacity control to reduce the capacity, the blowout temperature In order to raise the airflow temperature to a level that is not cold, there are techniques to lower the airflow rate or direct the airflow direction to areas other than residential areas.

Problems to be Solved by the Invention As described above, in the prior art, cold draft prevention techniques are well known both during startup and during stabilization. However, although this technology provides a technique for preventing coldness, it does not directly provide warmth.

In other words, if you want to make the room a little warmer because it's chilly, you have to raise the entire room temperature, which goes against energy conservation if only one person is using the room. Also, this J
: When the room temperature rises and becomes stable, the blowing temperature decreases in the same way as above, and the wind speed control is added to reproduce the same results. As can be seen from these examples, the problem that could not be solved with conventional technology is that when the room temperature stabilizes, the outlet air temperature decreases, and if you try to maintain the outlet air temperature, the outlet air speed decreases, making it difficult to live. There was a major problem in that warm air did not reach the area, and only the area near the air conditioner was warm, disrupting the uniformity of the room temperature distribution.

The present invention solves the above problems, and is an inverter-driven heat pump type air conditioner that can maintain the current temperature of the outlet air when the temperature of the outlet air decreases due to capacity control specific to the inverter when the room temperature is stable. The purpose is to provide the following.

Means for Solving the Problems In order to solve the above problems, a means is needed that can arbitrarily control the blowing temperature without changing the blowing air speed. In other words, it combines the rotational speed control of the compressor using an inverter, which is the basis for capacity control, the control of the air volume of the blower that blows out from the air conditioner into the air-conditioned space to control the blowout air speed, and the shape control of the air outlet. , it is necessary to perform control so that an arbitrary outlet temperature can be obtained, and the temperature of the outlet air at the outlet and the wind when it reaches the residential area are determined by the temperature (room temperature) at the speed of the residential area from the outlet. Since there is a difference in the temperature of The temperature of the air outlet J[ detected by the controller is controlled 1IiIJ so that the temperature is set by the air outlet temperature selection switch.

Effect With the above configuration, assuming that a blowout temperature of 50°C is selected with the selection switch on the operation unit under the conventional condition of blowing out a blowout temperature of 40°C, first the blowout temperature is set to ff1.
Decrease ffi and increase wind temperature by 1. However, since the distance that the air reaches is reduced, the shape of the air outlet is changed by using a driving source such as a motor to change the direction of the wind direction changing blades in the vertical and horizontal directions. The blowing direction of the straw wind is kept the same, and the cross-sectional area of the blowing outlet is made small. This means that the same conditions have been created for the distance that the air reaches, but the heating capacity decreases in proportion to the decrease in the amount of air blown out. Therefore, the rotation speed of the compressor is increased to compensate for the lack of heating capacity. By feeding back the output of the air outlet temperature from the temperature detector, that is, the Suita humidity, to this series of operations, it is possible to create an air conditioner with the same heating capacity at an air outlet temperature of 50°C. This makes it possible to bring the temperature of the hot air that hits the living area to a desired temperature, no matter what the room temperature is.

Example An embodiment of the present invention will be described below based on the drawings.

FIG. 1 is a schematic partially cutaway perspective view of an indoor unit of a separate heat pump type air conditioning/heating air conditioner. In Fig. 1, 1 is a vertical wind direction changing blade, 2 is an Ishikawa left/right wind direction changing blade, 3 is a left side left/right wind direction changing blade, 4 is a blower motor, and 5 is a blower driven by the blower motor 4 [1] It's a cross flow.

Further, 6 is a heat exchanger, 7 is a thermistor that detects the temperature of the heat exchanger 6, and 8 is an ifl! of the blowing air! A thermistor for normal detection, 9 a remote control which is an operation section, and 10 a blowout temperature selection switch provided on the remote control 9.

Further, 11 is a thermistor for detecting suction temperature (room temperature) disposed on the windward side of the heat exchanger 6.

Next, the operation is explained using the flowchart in Fig. 2 based on an example in which the outlet temperature is selected to 50°C using the outlet temperature lf selection switch 0 shown on the remote control 9 and heating operation is started. I will explain. At the start of operation, if the heat exchanger temperature is 20° C. or lower, as in the conventional case, the cold air blowout prevention function is activated, the blower motor 4 is stopped, and no air is blown. When the temperature of the heat exchanger 6 detected by the thermistor 7 becomes 20° C. or higher, the hot start is canceled and the cross-flow fan 5 is rotated with ultra-light air. At this time, no wind reaches the living space. When the air starts blowing out, the temperature of the blowing air is detected by the thermistor 8, and feedback control is performed based on this temperature as shown in FIG. Here, the blower motor 4
The rotation speed is at least 500 rpm to 50 rpm or 10
A stepwise change is possible with only 0 r prg &1, and the normal operating range is 1000 to 15000 rpm.

In addition, the wind direction changing blade 1.2 installed in the air conditioner
．． 3 are each driven by an independent motor (not shown) as a driving source, and are adjustable.

First, if the blowout temperature is below 50℃ and has not reached 45℃, in order to increase the air temperature, the rotation speed of the blower motor 4 is lowered by 1100 rpm than the set rotation speed. As shown in Fig. 3, the upward movement of the left and right wind direction changing blades 2.3 is concentrated by 10 degrees to create a spot shapeff.
By controlling the wind direction to 1A, this can be done without increasing the air volume. However, the rotation speed does not decrease below the minimum rotation speed of 500 rpm.

Here, if the wind speed is increased too much, the discomfort caused by the wind will increase,
The wind speed should not be reduced beyond a contracted flow state determined by the position of the wind direction changing blades 2 and 3 and the rotation speed of the blower motor 4 so that the wind speed does not exceed a certain value, as there is a high risk of causing an increase in noise. shall be. Further, the upper and lower wind direction changing blades 1 may also be adjusted together.

When the blowing temperature is below 50°C but above 45°C, the rotation speed of the blower motor 4 is increased so that the rotation speed remains at 50 rpm below the set rotation speed.

When the blowing temperature reaches 50°C or more, the air volume is increased, and the left and right wind direction changing vanes 2.3 are each set to a 5° wider angle than the above spot condition, and the airflow returns to normal.

As for heating capacity control, by using conventional control, when the capacity is insufficient, the compressor rotational speed is increased and the room temperature is controlled to be constant through the thermistor 11.

Effects of the Invention According to the present invention, the temperature of the outlet air can be specified using the outlet N11i selection switch, and by performing feedback control as described above, heating operation can be performed at any outlet temperature. Since heat can be taken even in low temperature conditions, it is possible to obtain warmth even when the room temperature is still low at the early stage of startup.In addition, when the temperature is stable, the blowout temperature, which conventionally was lowered due to the capacity control unique to inverters, can be reduced to a high temperature. In addition to the enveloping warmth of heat pump heating, it is now possible to obtain high-temperature wind similar to that of combustion heaters with a selection switch, making it possible to obtain heat from conventional air conditioning and heating equipment. It has such wonderful effects that it can be considered as a transformation into a device.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view of an indoor unit of an inverter-driven heat pump type air conditioning/heating air conditioner showing an embodiment of the present invention, Fig. 2 is a flowchart of control by the air conditioner, and Fig. 3 is a blowout It is an explanatory view showing the wind direction when the wind direction is set to a spot state. 1... Vertical wind direction changing blade, 2... Left/right wind direction changing blade (Ishikawa), 3... Left/right wind direction changing blade (for left), 4...
・Blower motor, 6... Heat exchanger, 7... Thermistor for detecting heat exchanger temperature, 8... Thermistor for detecting outlet temperature, 9... Remote control, 10... Outlet temperature selection switch, 11...Thermistor for detecting room temperature. Agent Yoshihiro Morimoto 1 Figure 1 t/ 2- Usa Gen Ichigo (Kande) 3, - ) J- Utsubo 11mm 1ri Ptsu A17-6211 Piece) N4 ~ Erection Suspension ℃zu ! - No-ga support 1 71. - Heat comb 1" S, 3" Lt, β =, h
) Naami people 7y ---1**IJL4 Rito・Bonhyoha Usan-Mi, Su,! tr, -% Warmth Sensation H Excitement - Mister Figure 2

Claims (1)

[Claims] 1. A temperature detector for detecting the temperature of the blowing air is provided on the main body of the device, and a blowing temperature selection switch for specifying the temperature of the blowing air blowing into the air-conditioned space is provided on the operating section of the device, and the temperature detector detects the temperature. An inverter-driven heat pump type air conditioner for heating and cooling, which is provided with means for controlling the temperature to a set temperature of the outlet temperature selection switch.